プラズマ溶射ハイドロキシアパタイトコーティング材の界面強度評価

抄録

View of improvement of Quality of life (QOL) for senior citizens, implant treatment that embed prosthesis into a living body has advanced as a method of treating for deterioration or a lesion part. Recently, addition of Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂, HAp) coatings onto titanium alloy has been developed to reduce duration of treatment and improve strength of treated part. However, adhesion property between such coatings / substrates isn't well known. The purpose of this study is to establish evaluation method of interfacial strength for such coatings system. In this study, plasma-sprayed HAp coating specimens were investigated by means of both tensile adhesion strength test and shear adhesion strength test. The influence of evaluation method and pre / post heat treatment on interfacial strength of plasma-sprayed HAp coating was discussed.